Congenital corneal opacity

This code signifies a congenital abnormality of the cornea characterized by a lack of transparency, present at birth or shortly thereafter. This opacity can range from a subtle haze to a dense, white lesion, potentially impairing vision. It is a structural defect of the cornea rather than an acquired condition.

Use this code for patients diagnosed with corneal clouding or opacification that is explicitly documented as congenital in origin. Supporting documentation should clearly state the congenital nature of the corneal anomaly, often noted during an infant's initial eye examination or early childhood.

• Differentiate from acquired corneal opacities (e.g., due to trauma, infection, or inflammation) which are coded elsewhere.
• Always review documentation for laterality (e.g., right, left, bilateral) and append the appropriate seventh character if specified.
• Consider co-occurring congenital anomalies of the eye or other systems, and code them separately if documented.